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https://github.com/RetroDECK/Supermodel.git
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Use c++11 raw string literals
This commit is contained in:
Ian Curtis
parent
3efb055344
commit
2335f3173b
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@ -4,55 +4,59 @@
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namespace New3D {
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static const char *vertexShaderFog =
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static const char *vertexShaderFog = R"glsl(
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"uniform mat4 mvp;\n"
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uniform mat4 mvp;
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"void main(void)\n"
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"{\n"
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"gl_Position = mvp * gl_Vertex;\n"
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"}\n";
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void main(void)
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{
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gl_Position = mvp * gl_Vertex;
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};
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static const char *fragmentShaderFog =
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)glsl";
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"uniform float fogAttenuation;\n"
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"uniform float fogAmbient;\n"
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"uniform vec4 fogColour;\n"
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"uniform vec3 spotFogColor;\n"
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"uniform vec4 spotEllipse;\n"
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static const char *fragmentShaderFog = R"glsl(
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uniform float fogAttenuation;
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uniform float fogAmbient;
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uniform vec4 fogColour;
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uniform vec3 spotFogColor;
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uniform vec4 spotEllipse;
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// Spotlight on fog
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"float ellipse;\n"
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"vec2 position, size;\n"
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"vec3 lSpotFogColor;\n"
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float ellipse;
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vec2 position, size;
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vec3 lSpotFogColor;
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// Scroll fog
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"float lfogAttenuation;\n"
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"vec3 lFogColor;\n"
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"vec4 scrollFog;\n"
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float lfogAttenuation;
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vec3 lFogColor;
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vec4 scrollFog;
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"void main()\n"
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"{\n"
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void main()
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{
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// Scroll fog base color
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"lFogColor = fogColour.rgb * fogAmbient;\n"
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lFogColor = fogColour.rgb * fogAmbient;
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// Spotlight on fog (area)
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"position = spotEllipse.xy;\n"
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"size = spotEllipse.zw;\n"
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"ellipse = length((gl_FragCoord.xy - position) / size);\n"
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"ellipse = pow(ellipse, 2.0);\n" // decay rate = square of distance from center
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"ellipse = 1.0 - ellipse;\n" // invert
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"ellipse = max(0.0, ellipse);\n" // clamp
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position = spotEllipse.xy;
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size = spotEllipse.zw;
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ellipse = length((gl_FragCoord.xy - position) / size);
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ellipse = pow(ellipse, 2.0); // decay rate = square of distance from center
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ellipse = 1.0 - ellipse; // invert
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ellipse = max(0.0, ellipse); // clamp
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// Spotlight on fog (color)
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"lSpotFogColor = mix(spotFogColor * ellipse * fogColour.rgb, vec3(0.0), fogAttenuation);\n"
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lSpotFogColor = mix(spotFogColor * ellipse * fogColour.rgb, vec3(0.0), fogAttenuation);
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// Scroll fog density
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"scrollFog = vec4(lFogColor + lSpotFogColor, fogColour.a);\n"
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scrollFog = vec4(lFogColor + lSpotFogColor, fogColour.a);
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// Final Color
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"gl_FragColor = scrollFog;\n"
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"}\n";
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gl_FragColor = scrollFog;
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};
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)glsl";
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R3DScrollFog::R3DScrollFog()
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@ -3,165 +3,167 @@
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namespace New3D {
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static const char *vertexShaderR3D =
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static const char *vertexShaderR3D = R"glsl(
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// uniforms
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"uniform float fogIntensity;\n"
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"uniform float fogDensity;\n"
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"uniform float fogStart;\n"
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uniform float fogIntensity;
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uniform float fogDensity;
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uniform float fogStart;
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//outputs to fragment shader
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"varying float fsFogFactor;\n"
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"varying vec3 fsViewVertex;\n"
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"varying vec3 fsViewNormal;\n" // per vertex normal vector
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"varying vec4 fsColor;\n"
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varying float fsFogFactor;
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varying vec3 fsViewVertex;
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varying vec3 fsViewNormal; // per vertex normal vector
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varying vec4 fsColor;
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"void main(void)\n"
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"{\n"
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"fsViewVertex = vec3(gl_ModelViewMatrix * gl_Vertex);\n"
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"fsViewNormal = normalize(gl_NormalMatrix *gl_Normal);\n"
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"float z = length(fsViewVertex);\n"
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"fsFogFactor = fogIntensity * clamp(fogStart + z * fogDensity, 0.0, 1.0);\n"
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void main(void)
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{
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fsViewVertex = vec3(gl_ModelViewMatrix * gl_Vertex);
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fsViewNormal = normalize(gl_NormalMatrix * gl_Normal);
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float z = length(fsViewVertex);
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fsFogFactor = fogIntensity * clamp(fogStart + z * fogDensity, 0.0, 1.0);
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"fsColor = gl_Color;\n"
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"gl_TexCoord[0] = gl_MultiTexCoord0;\n"
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"gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
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"}\n";
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fsColor = gl_Color;
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gl_TexCoord[0] = gl_MultiTexCoord0;
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gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
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}
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)glsl";
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static const char *fragmentShaderR3D =
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static const char *fragmentShaderR3D = R"glsl(
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"uniform sampler2D tex1;\n" // base tex
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"uniform sampler2D tex2;\n" // micro tex (optional)
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uniform sampler2D tex1; // base tex
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uniform sampler2D tex2; // micro tex (optional)
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"uniform bool textureEnabled;\n"
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"uniform bool microTexture;\n"
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"uniform float microTextureScale;\n"
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"uniform vec2 baseTexSize;\n"
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"uniform bool textureInverted;\n"
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"uniform bool alphaTest;\n"
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"uniform bool textureAlpha;\n"
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"uniform vec3 fogColour;\n"
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"uniform vec4 spotEllipse;\n" // spotlight ellipse position: .x=X position (screen coordinates), .y=Y position, .z=half-width, .w=half-height)
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"uniform vec2 spotRange;\n" // spotlight Z range: .x=start (viewspace coordinates), .y=limit
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"uniform vec3 spotColor;\n" // spotlight RGB color
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"uniform vec3 spotFogColor;\n" // spotlight RGB color on fog
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"uniform vec3 lighting[2];\n" // lighting state (lighting[0] = sun direction, lighting[1].x,y = diffuse, ambient intensities from 0-1.0)
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"uniform bool lightEnable;\n" // lighting enabled (1.0) or luminous (0.0), drawn at full intensity
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"uniform float specularCoefficient;\n" // specular coefficient
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"uniform float shininess;\n" // specular shininess
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"uniform float fogAttenuation;\n"
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"uniform float fogAmbient;\n"
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uniform bool textureEnabled;
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uniform bool microTexture;
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uniform float microTextureScale;
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uniform vec2 baseTexSize;
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uniform bool textureInverted;
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uniform bool alphaTest;
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uniform bool textureAlpha;
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uniform vec3 fogColour;
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uniform vec4 spotEllipse; // spotlight ellipse position: .x=X position (screen coordinates), .y=Y position, .z=half-width, .w=half-height)
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uniform vec2 spotRange; // spotlight Z range: .x=start (viewspace coordinates), .y=limit
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uniform vec3 spotColor; // spotlight RGB color
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uniform vec3 spotFogColor; // spotlight RGB color on fog
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uniform vec3 lighting[2]; // lighting state (lighting[0] = sun direction, lighting[1].x,y = diffuse, ambient intensities from 0-1.0)
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uniform bool lightEnable; // lighting enabled (1.0) or luminous (0.0), drawn at full intensity
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uniform float specularCoefficient;// specular coefficient
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uniform float shininess; // specular shininess
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uniform float fogAttenuation;
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uniform float fogAmbient;
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//interpolated inputs from vertex shader
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"varying float fsFogFactor;\n"
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"varying vec3 fsViewVertex;\n"
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"varying vec3 fsViewNormal;\n" // per vertex normal vector
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"varying vec4 fsColor;\n"
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varying float fsFogFactor;
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varying vec3 fsViewVertex;
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varying vec3 fsViewNormal; // per vertex normal vector
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varying vec4 fsColor;
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"vec4 GetTextureValue()\n"
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"{\n"
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"vec4 tex1Data = texture2D( tex1, gl_TexCoord[0].st);\n"
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vec4 GetTextureValue()
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{
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vec4 tex1Data = texture2D( tex1, gl_TexCoord[0].st);
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"if(textureInverted) {\n"
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"tex1Data.rgb = vec3(1.0) - vec3(tex1Data.rgb);\n"
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"}\n"
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if(textureInverted) {
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tex1Data.rgb = vec3(1.0) - vec3(tex1Data.rgb);
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}
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"if (microTexture) {\n"
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"vec2 scale = baseTexSize/256.0;\n"
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"vec4 tex2Data = texture2D( tex2, gl_TexCoord[0].st * scale * microTextureScale);\n"
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"tex1Data = (tex1Data+tex2Data)/2.0;\n"
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"}\n"
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if (microTexture) {
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vec2 scale = baseTexSize/256.0;
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vec4 tex2Data = texture2D( tex2, gl_TexCoord[0].st * scale * microTextureScale);
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tex1Data = (tex1Data+tex2Data)/2.0;
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}
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"if (alphaTest) {\n"
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"if (tex1Data.a < (8.0/16.0)) {\n"
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"discard;\n"
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"}\n"
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"}\n"
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if (alphaTest) {
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if (tex1Data.a < (8.0/16.0)) {
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discard;
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}
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}
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"if (textureAlpha == false) {\n"
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"tex1Data.a = 1.0;\n"
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"}\n"
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if (textureAlpha == false) {
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tex1Data.a = 1.0;
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}
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"return tex1Data;\n"
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"}"
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return tex1Data;
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}
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"void main()\n"
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"{\n"
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"vec4 tex1Data;\n"
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"vec4 colData;\n"
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"vec4 finalData;\n"
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"vec4 fogData;\n"
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void main()
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{
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vec4 tex1Data;
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vec4 colData;
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vec4 finalData;
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vec4 fogData;
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"fogData = vec4(fogColour.rgb * fogAmbient, fsFogFactor);\n"
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"tex1Data = vec4(1.0, 1.0, 1.0, 1.0);\n"
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fogData = vec4(fogColour.rgb * fogAmbient, fsFogFactor);
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tex1Data = vec4(1.0, 1.0, 1.0, 1.0);
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"if(textureEnabled) {\n"
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"tex1Data = GetTextureValue();\n"
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"}\n"
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if(textureEnabled) {
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tex1Data = GetTextureValue();
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}
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"colData = fsColor;\n"
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"finalData = tex1Data * colData;\n"
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colData = fsColor;
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finalData = tex1Data * colData;
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"if (finalData.a < (1.0/16.0)) {\n" // basically chuck out any totally transparent pixels value = 1/16 the smallest transparency level h/w supports
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"discard;\n"
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"}\n"
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if (finalData.a < (1.0/16.0)) { // basically chuck out any totally transparent pixels value = 1/16 the smallest transparency level h/w supports
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discard;
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}
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"float ellipse;\n"
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"ellipse = length((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw);\n"
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"ellipse = pow(ellipse, 2.0);\n" // decay rate = square of distance from center
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"ellipse = 1.0 - ellipse;\n" // invert
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"ellipse = max(0.0, ellipse);\n" // clamp
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float ellipse;
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ellipse = length((gl_FragCoord.xy - spotEllipse.xy) / spotEllipse.zw);
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ellipse = pow(ellipse, 2.0); // decay rate = square of distance from center
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ellipse = 1.0 - ellipse; // invert
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ellipse = max(0.0, ellipse); // clamp
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"if (lightEnable) {\n"
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"vec3 lightIntensity;\n"
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"vec3 sunVector;\n" // sun lighting vector (as reflecting away from vertex)
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"float sunFactor;\n" // sun light projection along vertex normal (0.0 to 1.0)
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if (lightEnable) {
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vec3 lightIntensity;
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vec3 sunVector; // sun lighting vector (as reflecting away from vertex)
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float sunFactor; // sun light projection along vertex normal (0.0 to 1.0)
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// Sun angle
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"sunVector = lighting[0];\n"
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sunVector = lighting[0];
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// Compute diffuse factor for sunlight
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"sunFactor = max(dot(sunVector, fsViewNormal), 0.0);\n"
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sunFactor = max(dot(sunVector, fsViewNormal), 0.0);
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// Total light intensity: sum of all components
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"lightIntensity = vec3(sunFactor*lighting[1].x + min(lighting[1].y,0.75));\n" // diffuse + ambient (clamped to max 0.75)
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lightIntensity = vec3(sunFactor*lighting[1].x + min(lighting[1].y,0.75)); // diffuse + ambient (clamped to max 0.75)
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"lightIntensity = clamp(lightIntensity,0.0,1.0);\n"
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lightIntensity = clamp(lightIntensity,0.0,1.0);
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// Compute spotlight and apply lighting
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"float enable, range, d;\n"
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"float inv_r = 1.0 / spotEllipse.z;\n" // slope of decay function
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float enable, range, d;
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float inv_r = 1.0 / spotEllipse.z; // slope of decay function
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"d = spotRange.x + spotRange.y + fsViewVertex.z;\n"
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"enable = step(spotRange.x + min(spotRange.y, 0.0), -fsViewVertex.z);\n"
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d = spotRange.x + spotRange.y + fsViewVertex.z;
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enable = step(spotRange.x + min(spotRange.y, 0.0), -fsViewVertex.z);
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// inverse-linear falloff
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// Reference: https://imdoingitwrong.wordpress.com/2011/01/31/light-attenuation/
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// y = 1 / (d/r + 1)^2
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"range = 1.0 / pow(min(0.0, d * inv_r) - 1.0, 2.0);\n"
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"range = clamp(range, 0.0, 1.0);\n"
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"range *= enable;\n"
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range = 1.0 / pow(min(0.0, d * inv_r) - 1.0, 2.0);
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range = clamp(range, 0.0, 1.0);
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range *= enable;
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"float lobeEffect = range * ellipse;\n"
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float lobeEffect = range * ellipse;
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"lightIntensity.rgb += spotColor*lobeEffect;\n"
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lightIntensity.rgb += spotColor*lobeEffect;
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"finalData.rgb *= lightIntensity;\n"
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finalData.rgb *= lightIntensity;
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"if (sunFactor > 0.0 && specularCoefficient > 0.0) {\n"
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"float nDotL = max(dot(fsViewNormal,sunVector),0.0);\n"
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"finalData.rgb += vec3(specularCoefficient * pow(nDotL,shininess));\n"
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"}\n"
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"}\n"
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if (sunFactor > 0.0 && specularCoefficient > 0.0) {
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float nDotL = max(dot(fsViewNormal,sunVector),0.0);
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finalData.rgb += vec3(specularCoefficient * pow(nDotL,shininess));
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}
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}
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// Spotlight on fog
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"vec3 lSpotFogColor = spotFogColor * ellipse * fogColour.rgb;\n"
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vec3 lSpotFogColor = spotFogColor * ellipse * fogColour.rgb;
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// Fog & spotlight applied
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"finalData.rgb = mix(finalData.rgb, lSpotFogColor * fogAttenuation + fogData.rgb, fogData.a);\n"
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finalData.rgb = mix(finalData.rgb, lSpotFogColor * fogAttenuation + fogData.rgb, fogData.a);
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"gl_FragColor = finalData;\n"
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"}\n";
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gl_FragColor = finalData;
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}
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)glsl";
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R3DShader::R3DShader()
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{
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